GrovTec USA Heavy Duty Push Button Swivels Features The GrovTec Heavy Duty Push Button Swivels are machined from all steel for a construction that holds up to heavy use over years of ownership. Each swivel is tension and tumble tested confirming it can handle the repeated stress of carrying a loaded shotgun across a sling. Sized for most 12 gauge barrels with a .800 to .850 inch diameter these swivels fit a wide range of shotgun models without special fitting. The push button release design allows quick attachment and removal of the sling when needed. A matte Black Nitride finish gives the swivels an extremely durable surface that resists corrosion and wear better than standard platings. This finish keeps the swivels functioning smoothly even after extended exposure to weather and handling. Built to accept 1 inch sling loops these swivels are compatible with a wide range of common sling widths used by hunters and shooters. GrovTec designs this hardware for shooters who want dependable sling attachment without worrying about failure under load. GrovTec USA Heavy Duty Push Button Swivels Specifications Manufacturer: GrovTec USA Model: Heavy Duty Push Button Swivels Compatible Hosts: Most 12 Gauge Shotguns (.800-.850 Dia.) Size: 1 Material: Black-oxide Steel Finish: Nitride Color: Black Available At: GrabAGun